If you plan to take the TJ test, the most important question you must answer is "How do I stack up against my competition?" The first step is to find out the performance level which results in 95th percentile or higher on the TJ test year after year; the next step is to learn how to solve challenging problems fast enough so as to achieve similar or better performance. It is of utmost importance to have access to the longest possible historical performance data to practice against. Remember, while it is true that your goal should be to learn and improve everyday, it also helps to know about the competition (whether it is a race or the TJ test preparation). If you have questions for us or if you feel differently, please share your thoughts below for the benefit of all concerned.